Mop and mop wringer

ABSTRACT

A mop having a sponge mop pad is effective for cleaning in a hospital for avoidance of internal infection. In a conventional sponge mop, for washing off dust and dirt sticking to the mop after used for the cleaning, spring force has been used for folding the sponge mop pad at the middle position thereof to squeeze off the water contained in the mop by compression force. This requires a large force and workers, especially women workers, had a difficulty in the cleaning work. In the present invention, the mop having the sponge mop pad comprises a projection and the mop squeezer comprises an insert member into which the projection is inserted. By the principle of lever, the sponge mop pad is easily squeezed by homogenous compression force and predetermined water content of the mop, after squezzed, can be realized.

TECHNICAL FIELD

[0001] The present invention relates to a mop to be used for wiping andcleaning a floor etc., especially in a hospital, and a mop squeezer tobe used for squeezing water out of the mop after the mop is washed bywater.

BACKGROUND ART

[0002] In wiping and cleaning the floor etc. in a hospital, it isespecially required to remove the dust and dirt without rise of the dustfor avoidance of internal infection like in-hospital infection.Nowadays, it is required to remove the dust and dirt more and moresecurely and cleanly than in the case using the conventional wiping andcleaning mop.

[0003] Thus, the inventors here are currently using such a mop as usesreproduced cellulose sponge (herein referred to as “a swing mop”) foreffecting a high dust recovery and remarkably reducing the number ofsticking bacteria after cleaning so as to be appropriately employed forthe abovementioned object.

[0004]FIGS. 35 and 36 illustrate the abovementioned swing mop a, whereinFIG. 35 is a perspective view and FIG. 36 is an enlarged side view of amop portion of the swing mop a.

[0005] In FIGS. 35 and 36, reference letters b to m designate parts andcomponents, respectively, as follows:

[0006] b: a handle, c: a sliding grip handle, d: a thumb slot,

[0007] e: a linkage fit slot, f: a mop handle, g: a metal link rod,

[0008] h: a metal squeezing wire, i: a squeezing arm,

[0009] j: a handle socket, k: a shroud body, l: a metal paddle, and

[0010] m: a sponge mop pad.

[0011] In handling the swing mop a, the metal paddle l together with thesponge mop pad m is moved, as shown in FIG. 36. That is, the metalpaddle l and the sponge mop pad m attached thereto are usually in thehorizontal position, as shown by the two dotted and dash lines. In thisstate, the sponge mop pad m is wetted and used for wiping the floor.

[0012] Thereafter, the sponge mop pad m is washed by wash water in awater tank (not shown). Then, when the water is to be removed of thesponge mop pad m, the sliding grip handle c is pushed down by hand alongthe mop handle f to thereby move the metal link rod g downward. Thus,the metal squeezing wires h, h and the squeezing arms i, i, bothrotatably linked to the metal link rod g, rotate swingingly, as shown byarrows in FIG. 36, against spring force of a spring (not shown), so thatthe metal paddle l and the sponge mop pad m rotate to the verticaldirection from the horizontal direction. Thereby, the sponge mop pads m,m (the left hand half and the right hand half in the figure) are foldedtogether against each other and the water is squeezed off.

[0013] As this swing mop a is of such a type that the sponge mop pad mis doubled at its mid position, a large physical power is requiredtherefor so that the power of workers performing the cleaning in ahospital etc., especially in case of female workers, is often notsufficient and a countermeasure to enable squeezing by a lighter powerhas been desired.

[0014] Thus, a simplified type of the above swing mop a is recentlyavailable in which the metal link rod g is eliminated and the metalsqueezing wires h, h and the arms i, i are rotated downward so that thesponge mop pads m, m are folded. In this type of the mop, however, thewater squeezing still requires a large physical power and a furtherimprovement thereof is being desired.

[0015] Also, in the swing mop a, folding of the sponge mop pad m isrepeated to thereby cause a severe deterioration of the pad and acountermeasure therefor has been desired.

[0016] Moreover, in the swing mop a, when the sponge mop pad m isfolded, pressing force acting on the mutually opposed portions of thesponge mop pads m, m differs in the vertical direction in FIG. 36 or inthe longitudinal direction of the sponge mop pads m, m, after folded,and the water content in the sponge mop pads m, m, after squeezed, isnot homogenous so that there is caused an irregularity in wiping thefloor. Hence, a countermeasure to ensure a homogenous water content inthe sponge mop pads m, m to be used for wiping the floor has beendesired.

DISCLOSURE OF THE INVENTION

[0017] A first one of the present invention provides a mop and mopsqueezer unit, the mop being fitted with a sponge mop pad, the mopsqueezer squeezing wash water contained in the sponge mop pad,characterized in that the mop and mop squeezer unit comprises an insertbody provided in one of the mop and the mop squeezer, a fit member, towhich the insert body is fitted, provided in the other of the mop andthe mop squeezer, a receiver plate arranged below the insert body or thefit member in the mop squeezer and a movable mechanism that is rotatableso as to change a gap between the insert body or the fit member and thereceiver plate.

[0018] A second one of the present invention provides a mop and mopsqueezer unit as mentioned in the first invention, characterized in thata spring is provided between the insert body or the fit member and thereceiver plate.

[0019] A third one of the present invention provides a mop squeezersqueezing wash water contained in a sponge mop pad that is attached to arigid body of a mop, characterized in that the mop squeezer comprises areceiver plate arranged in the mop squeezer, there is formed a fulcrumthat makes contact with at least one point of the rigid body to whichthe sponge mop pad is attached and a gap between the fulcrum and thereceiver plate is changeable.

[0020] A fourth one of the present invention provides a mop squeezer asmentioned in the third invention, characterized in that the fulcrum isformed on a presser plate, a strut to form a gap between the receiverplate and the presser plate is provided passing through the receiverplate and the presser plate and an elastic member is provided atportions of the strut that pass through the receiver plate and thepresser plate.

[0021] A fifth one of the present invention provides a mop squeezer asmentioned in the third or fourth invention, characterized in that themop squeezer comprises a cylindrical member on which the receiver plateis placed.

[0022] A sixth one of the present invention provides a mop squeezer asmentioned in any one of the third to fifth inventions, characterized inthat the cylindrical member is rotatable.

[0023] A seventh one of the present invention provides a mop squeezersqueezing wash water contained in a mop, characterized in that the mopsqueezer is provided above a water tank receiving the wash water that issqueezed off by the mop squeezer.

[0024] An eighth one of the present invention provides a mop squeezersqueezing wash water contained in a mop, characterized in that the mopsqueezer has a function to be detachably mounted on a strut providedabove a water tank receiving the wash water that is squeezed off by themop squeezer.

[0025] A ninth one of the present invention provides a mop squeezersqueezing wash water contained in a mop, characterized in that the mopsqueezer has a function to be detachably mounted on a strut, the strutat one portion being fixed to a carriage, on which a water tankreceiving the wash water that is squeezed off by the mop squeezer isplaced, and at another portion being provided above the water tank.

[0026] A tenth one of the present invention provides a mop squeezer,characterized in comprising a presser member provided in a framework ofthe mop squeezer and a receiver plate rotatably arranged below thepresser member in the framework so that a gap between the presser memberand the receiver plate is smaller than a thickness of a mop that isapplied to the mop squeezer.

[0027] An eleventh one of the present invention provides a mop squeezer,as mentioned in any one of the seventh to ninth inventions,characterized in comprising a presser member provided in a framework ofthe mop squeezer and a receiver plate rotatably arranged below thepresser member in the framework so that a gap between the presser memberand the receiver plate is smaller than a thickness of a mop that isapplied to the mop squeezer.

[0028] A twelfth one of the present invention provides a mop squeezer,characterized in comprising a strut fitted to each of two frame membersof the mop squeezer so that an acute angle is formed between the strutand the frame member, a presser member fixed between the struts and areceiver plate rotatably arranged between the frame members below thepresser member so that a gap between the presser member and the receiverplate is smaller than a thickness of a mop that is applied to the mopsqueezer.

[0029] A thirteenth one of the present invention provides a mopsqueezer, characterized in comprising a strut rotatably fitted to eachof two frame members of the mop squeezer so that, in a stationaryposition of the mop squeezer, substantially zero angle and an acuteangle are formed between the strut and the frame member, a pressermember fixed between the struts and a receiver plate rotatably arrangedbetween the frame members below the presser member so that a gap betweenthe presser member and the receiver plate is smaller than a thickness ofa mop that is applied to the mop squeezer.

[0030] A fourteenth one of the present invention provides a mop squeezeras mentioned in the thirteenth invention, characterized in that theframe members have their lower end portions connected to each other viaa lower frame fixing member, the struts have their lower end portionsconnected to each other via a lower strut fixing member and the framemembers and the struts are connected to each other via a hingemechanism.

[0031] A fifteenth one of the present invention provides a mop squeezer,characterized in comprising a strut fitted to each of two frame membersof the mop squeezer so that an acute angle is formed between the strutand the frame member, a presser piece fixed to each of the struts and areceiver plate rotatably arranged between the frame members below thepresser pieces so that a gap between the presser pieces and the receiverplate is smaller than a thickness of a mop that is applied to the mopsqueezer.

[0032] A sixteenth one of the present invention provides a mop squeezer,characterized in comprising a strut rotatably fitted to each of twoframe members of the mop squeezer so that, in a stationary position ofthe mop squeezer, substantially zero angle and an acute angle are formedbetween the strut and the frame member, a presser piece fixed to each ofthe struts and a receiver plate rotatably arranged between the framemembers below the presser pieces so that a gap between the presserpieces and the receiver plate is smaller than a thickness of a mop thatis applied to the mop squeezer.

[0033] A seventeenth one of the present invention provides a mopsqueezer as mentioned in the sixteenth invention, characterized in thatthe frame members have their lower end portions connected to each othervia a lower frame fixing member, the struts have their lower endportions connected to each other via a lower strut fixing member and theframe members and the struts are connected to each other via a hingemechanism.

BRIEF DESCRIPTION OF THE DRAWINGS

[0034]FIG. 1 is a perspective view of a mop with sponge of a firstembodiment according to the present invention.

[0035]FIG. 2 is a perspective view of a water tank of the firstembodiment.

[0036]FIG. 3 is a perspective view of a mop with sponge of a secondembodiment according to the present invention.

[0037]FIG. 4 is a perspective view of a water tank of the secondembodiment.

[0038]FIG. 5 is a perspective view of a mop with sponge of a thirdembodiment according to the present invention.

[0039]FIG. 6 is a perspective view of a water tank of the thirdembodiment.

[0040]FIG. 7 is a perspective view of a water tank of a fourthembodiment according to the present invention.

[0041]FIG. 8 is a front view of the water tank of FIG. 7.

[0042]FIG. 9 is a cross sectional side view of the water tank of FIG. 7.

[0043]FIG. 10 is a front view of a mop with sponge of the fourthembodiment, wherein FIG. 10 is also a front view of a mop with sponge ofa fifth embodiment according to the present invention shown in FIG. 13.

[0044]FIG. 11 is a side view of the mop with sponge of FIG. 10.

[0045]FIG. 12 is a function explanatory view of the fourth embodiment.

[0046]FIG. 13 is a perspective view of a water tank of the fifthembodiment.

[0047]FIG. 14 is a front view of the water tank of FIG. 13.

[0048]FIG. 15 is a cross sectional side view of the water tank of FIG.13.

[0049]FIG. 16 is a function explanatory view of the fifth embodiment.

[0050]FIG. 17 is a perspective view of a mop squeezer of a sixthembodiment according to the present invention.

[0051]FIG. 18 is a front view of the mop squeezer of FIG. 17.

[0052]FIG. 19 is a function explanatory view of the sixth embodiment.

[0053]FIG. 20 is a side view of the mop squeezer of FIG. 17 showing thestate where the mop squeezer is mounted on a carriage.

[0054]FIG. 21 is a front view of the mop squeezer of FIG. 20.

[0055]FIG. 22 is a rear view of the mop squeezer of FIG. 20.

[0056]FIG. 23 is a side view of a mop squeezer, mounted on a carriage,of a seventh embodiment according to the present invention.

[0057]FIG. 24 is a front view of the mop squeezer of FIG. 23.

[0058]FIG. 25 is a rear view of the mop squeezer of FIG. 23.

[0059]FIG. 26 is a perspective view of a mop squeezer of an eighthembodiment according to the present invention.

[0060]FIG. 27 is a side view of the mop squeezer of FIG. 26.

[0061]FIG. 28 is a function explanatory view of the mop squeezer of FIG.26.

[0062]FIG. 29 is a side view of a mop squeezer of a ninth embodimentaccording to the present invention.

[0063]FIG. 30 is a side view of the mop squeezer of FIG. 29 showing thestate where the mop squeezer is folded.

[0064]FIG. 31 is a side view of a mop squeezer of a tenth embodimentaccording to the present invention.

[0065]FIG. 32 is a front view of the mop squeezer of FIG. 31.

[0066]FIG. 33 is a side view of the mop squeezer of FIG. 31 showing thestate where the mop squeezer is folded.

[0067]FIG. 34 is a front view of a mop squeezer of an eleventhembodiment according to the present invention.

[0068]FIG. 35 is a perspective view of a mop with sponge in the priorart.

[0069]FIG. 36 is an enlarged perspective view of a mop portion of themop with sponge in the prior art.

BEST MODE FOR CARRYING OUT THE INVENTION

[0070] Herebelow, the present invention will be described moreconcretely based on embodiments according to the present invention withreference to the appended figures.

[0071]FIGS. 1 and 2 illustrate a first embodiment according to thepresent invention. In FIG. 1, numeral 101 designates a mop with sponge,numeral 102 designates a sponge mop pad, numeral 103 designates a metalplate that fixedly holds the sponge mop pad 102 and numeral 104designates a fixing lever that fixes a mop handle 105 to the metal plate103. Numeral 106 designates an insert lever that has a sharpened end andextends from the fixing lever 104 so as to project beyond the metalplate 103.

[0072] In FIG. 2, numeral 107 designates a box-like water tank that hasits upper surface opened and stores therein wash water (not shown).Numerals 108, 108 designate semi-circular projections that are providedat upper surface corner portions of the water tank 107 and havecentrally bored holes in which a rotating shaft 109 is rotatablysupported. Numeral 110 designates a compression frame member that hasits upper surface portion provided with a hollow 111, has its one sideend, that is, a rear frame member, 112 fixed with the rotating shaft 109and has a central portion of the other side end, that is, a front framemember, 113 fixedly provided with an insert ring 114. Numeral 115designates a compression receiver plate that is provided at an uppermiddle position in the water tank 107 so as to oppose to the insert ring114. Here, the minimum gap between the compression frame member 110 andthe compression receiver plate 115 is set to such a size as realizes anappropriate thickness of the sponge mop pad 102 by the compression.Numerals 116, 116 designate springs that are provided between upper sideend portions of the water tank 107 and the compression frame member 110.The springs 116, 116 in their natural state act on the compression framemember 110 so that the compression frame member 110 on its one side islifted to be kept apart from the water tank 107 in that state. Numeral117 designates a plurality of drain holes bored in the compressionreceiver plate 115. In stead of the drain holes, a plurality of draingrooves may be provided.

[0073] In the first embodiment constructed as mentioned above, thesponge mop pad 102 of the mop with sponge 101 is immersed into the washwater through the hollow 111 of the compression frame member 110 and thesticking dust and dirt of the sponge mop pad 102 are washed off. Then,the insert lever 106 of the mop with sponge 101 is inserted into theinsert ring 114 of the compression frame member 110 and the mop handle105 is rotated in the direction of arrow A in FIGS. 1 and 2 against thespring force of the springs 116, 116. Thereby, the sponge mop pad 102 ispinched to be compressed between the compression frame member 110 andthe compression receiver plate 115, so that the sponge mop pad 102 issqueezed to realize a desired water content therein appropriate for thewiping. The squeezed water falls down flowing through the plurality ofdrain holes 117 of the compression receiver plate 115 or flowing asidethe compression receiver plate 115 to be stored in the water tank 107.

[0074] When the insert lever 106 of the mop with sponge 101 is pulledout of the insert ring 114, the compression frame member 110 is liftedto rotate in the direction of arrow B in FIG. 2 by the spring force ofthe springs 116, 116.

[0075] It is to be noted that, while the insert lever 106 is provided onthe mop with sponge 101 side and the insert ring 114 on the compressionframe member 110 side in the present embodiment, the insert lever may beprovided reversely on the compression frame member 110 side and theinsert ring on the mop with sponge 101 side.

[0076]FIGS. 3 and 4 illustrate a second embodiment according to thepresent invention. In FIG. 3, numeral 101 a designates a mop withsponge, numeral 102 a designates a sponge mop pad, numeral 103 adesignates a metal plate that fixedly holds the sponge mop pad 102 a andnumeral 104 a designates a fixing lever that fixes a mop handle 105 a tothe metal plate 103 a. Numerals 106 a, 106 a designate insert leversthat are fixedly provided to the metal plate 103 a on both sides of thefixing lever 104 a so as to project from the metal plate 103 a. Whiletwo pieces of the insert lever 106 a are provided in FIG. 3, one pieceat the central position or three or more pieces thereof may be providedon the metal plate 103 a.

[0077] In FIG. 4, numeral 107 a designates a box-like water tank thathas its upper surface opened and stores therein wash water (not shown).Numerals 108 a, 108 a designate side plates of the water tank 107 a. Theside plates 108 a, 108 a have holes bored in upper side end portions ofthe side plates 108 a, 108 a in which a rotating shaft 109 a isrotatably supported. Numeral 110 a designates a compression presserplate that has its one side end fixed with the rotating shaft 109 a andits upper surface provided with insert tubes 114 a, 114 a at thecorresponding position of the insert levers 106 a, 106 a fixed to themetal plate 103 a of the mop with sponge 101 a. In FIG. 4, while twopieces of the insert tube 114 a are provided, one piece at the centralposition or three or more pieces thereof may be provided on thecompression presser plate 110 a. Numeral 115 a designates a compressionreceiver plate that is inclinedly provided at an upper middle positionin the water tank 107 a. Here, the minimum gap between the compressionpresser plate 110 a and the compression receiver plate 110 a is set tosuch a size as realizes an appropriate thickness of the sponge mop pad102 a by the compression. Numerals 116 a, 116 a designate springs thatare provided between peripheral side end portions of the compressionpresser plate 110 a and the corresponding portions of the compressionreceiver plate 115 a. The springs 116 a, 116 a in their natural stateact on the compression presser plate 110 a so that the compressionpresser plate 110 a on its one side is lifted to be kept apart from thecompression receiver plate 115 a in that state. Numeral 117 a designatesa plurality of drain holes bored in the compression receiver plate 115a. Instead of the drain holes, a plurality of drain grooves may beprovided. Numeral 118 a designates a cut portion, on which the mophandle 105 a abuts, provided in an upper peripheral central portion of afront plate 119 a of the water tank 107 a.

[0078] In the second embodiment constructed as mentioned above, thesponge mop pad 102 a of the mop with sponge 101 a is immersed into thewash water and the sticking dust and dirt of the sponge mop pad 102 aare washed off. Then, the insert levers 106 a, 106 a of the mop withsponge 101 a are inserted into the insert tubes 114 a, 114 a of thecompression presser plate 110 a and the mop handle 105 a is rotated inthe direction of arrow A in FIGS. 3 and 4 against the spring force ofthe springs 116 a, 116 a. Thereby, the sponge mop pad 102 a is pinchedto be compressed between the compression presser plate 110 a and thecompression receiver plate 115 a, so that the sponge mop pad 102 a issqueezed to realize a desired water content thereof appropriate for thewiping. The squeezed water falls down flowing through the plurality ofdrain holes 117 a of the compression receiver plate 115 a or flowingaside the compression receiver plate 115 a to be stored in the watertank 107 a.

[0079] When the insert levers 106 a, 106 a of the mop with sponge 101 aare pulled out of the insert rings 114 a, 114 a, the compression presserplate 110 a is lifted to rotate in the direction of arrow B in FIG. 4 bythe spring force of the springs 116 a, 116 a.

[0080] It is to be noted that, while the insert levers 106 a, 106 a areprovided on the mop with sponge 101 a side and the insert tubes 114 a,114 a on the compression presser plate 110 a side in the presentembodiment, the insert lever may be provided reversely on thecompression presser plate 110 a side and the insert tube on the mop withsponge 101 a side.

[0081]FIGS. 5 and 6 illustrate a third embodiment according to thepresent invention. In FIG. 5, numeral 101 b designates a mop withsponge, numeral 102 b designates a sponge mop pad, numeral 103 bdesignates a metal plate that fixedly holds the sponge mop pad 102 b.numeral 104 b designates a fixing lever that fixes a mop handle 105 b tothe metal plate 103 b. Numeral 106 b designates an insert lever that isprovided fixedly to the fixing lever 104 b so as to project therefrom.While one piece of the insert lever 106 b is provided in FIG. 5, aplurality thereof may be provided to the fixing lever 104 b.

[0082] In FIG. 6, numeral 107 b designates a box-like water tank thathas its upper surface opened and stores therein wash water (not shown).Numeral 108 b designates a side plate of the water tank 107 b. The sideplates 108 b, 108 b have holes bored in upper side end portions of theside plates 108 b, 108 b in which a rotating shaft 109 b is rotatablysupported. Numeral 110 b, 110 b designate rod members that are providedfixedly to and concentrically with the rotating shaft 109 b. An inserthollow member 114 b is fixedly provided to the rotating shaft 109 b at acentral position thereof. In FIG. 6, while one piece of the inserthollow member 114 b is provided, a plurality thereof may be provided tothe rotating shaft 109 b. Numeral 115 b designates a compressionreceiver plate that is inclinedly provided at an upper middle positionin the water tank 107 b. Here, the minimum gap between a lower surfaceof the metal plate 103 b and an upper surface of the compressionreceiver plate 115 b is set to such a size as realizes an appropriatethickness of the sponge mop pad 102 b by the compression. Numerals 116b, 116 b designate springs that are provided between end faces of therod members 110 b, 110 b and side faces of the insert hollow member 114b. The springs 116 b, 116 b have their one ends fixed to the side facesof the insert hollow member 114 b and the other ends fixed to a rearplate 120 b of the water tank 107 b. The springs 116 b, 116 b in theirnatural state act on the insert hollow member 114 b so that the inserthollow member 114 b on its one side is lifted to be kept apart from thecompression receiver plate 115 b in that state. Numeral 117 b designatesa plurality of drain holes bored in the compression receiver plate 115b. Instead of the drain holes, a plurality of drain grooves may beprovided. Numeral 118 b designates a cut portion, on which the mophandle 105 b abuts, provided in an upper peripheral central portion of afront plate 119 b of the water tank 107 b.

[0083] In the third embodiment constructed as mentioned above, thesponge mop pad 102 b of the mop with sponge 101 b is immersed into thewash water in the water tank 107 b and the sticking dust and dirt of thesponge mop pad 102 b are washed off. Then, the insert lever 106 b of themop with sponge 101 b is inserted into the insert hollow member 114 b ofthe water tank 107 b and the mop handle 105 b is rotated in thedirection of arrow A in FIGS. 5 and 6 against the spring force of thesprings 116 b, 116 b. Thereby, the sponge mop pad 102 b is pinched to becompressed between the metal plate 103 and the compression receiverplate 115 b, so that the sponge mop pad 102 b is squeezed to realize adesired water content thereof appropriate for the wiping. The squeezedwater falls down flowing through the plurality of drain holes 117 b ofthe compression receiver plate 115 b or flowing aside the compressionreceiver plate 115 b to be stored in the water tank 107 b.

[0084] When the insert lever 106 b of the mop with sponge 101 b ispulled out of the insert hollow member 114 b, the insert hollow member114 b is lifted to rotate in the direction of arrow B in FIG. 6 by thespring force of the springs 116 b, 116 b.

[0085] It is to be noted that, while the insert lever 106 b is providedon the mop with sponge 101 b side and the insert hollow member 114 b onthe water tank 107 b side in the present embodiment, the insert levermay be provided reversely on the water tank 107 b side and the inserthollow member on the mop with sponge 101 b side.

[0086] Next, FIGS. 7 to 16 illustrate a fourth and a sixth embodimentsaccording to the present invention. FIGS. 7 to 9 and FIG. 12 show thefourth embodiment, wherein FIG. 7 is a perspective view, FIG. 8 is afront view, FIG. 9 is a cross sectional side view taken on line IX-IX ofFIG. 8 and seen in the direction of arrows, FIG. 10 is a front view of amop with sponge of the fourth embodiment, FIG. 11 is a side view of themop of FIG. 10 and FIG. 12 is a function explanatory view of the fourthembodiment.

[0087] In FIGS. 7 to 9, numeral 201 designates a box-like water tankthat has its upper surface opened and stores therein wash water (notshown). Numeral 202 designates a front plate of the water tank 201,numerals 203, 203 designate side plates of the water tank 201 andnumeral 204 designates a rear plate of the water tank 201. Numeral 205designates a cylindrical member that is provided between the side plates203, 203. This cylindrical member 205 may be provided either fixedly orrotatably. Numeral 206 designates a receiver plate that is placed on thecylindrical member 205, and numeral 207 designates a presser plate thatis provided between the side plates 203, 203 with an appropriate gapkept above the receiver plate 206. Numeral 208 designates a shaft thatis provided projecting from both side end faces of the presser plate 207to be rotatably supported to the side plates 203, 203. Numeral 209designates a cut portion that is provided at a front peripheral centralposition of the presser plate 207. Numeral 210 designates a reinforcingplate that is fixed to an upper surface of the presser plate 207.Numerals 211, 211 designate struts that support the presser plate 207and the receiver plate 206. Numerals 212 a, 212 b designate an upper nutand a lower nut, respectively, that adjustably form a length of thestrut 211 between the presser plate 207 and the receiver plate 206. Thelength of the struts 211, 211 between a lower surface of the presserplate 207 and an upper surface of the receiver plate 206 is adjusted bythe position of the upper nut 212 a or the lower nut 212 b so as to beappropriately smaller than a thickness of a sponge mop pad 214 and ametal plate 215 fixedly supporting the sponge mop pad 214, as shown inFIGS. 10 and 11. That is, the minimum gap between the lower surface ofthe presser plate 207 and the upper surface of the receiver plate 206 isset to such a size as realizes an appropriate thickness of the spongemop pad 214 by the compression. In FIGS. 10 and 11, numeral 217designates a fixing lever that fixes a mop handle 216 to the metal plate215.

[0088] In the fourth embodiment constructed as mentioned above, thelength of the strut 211 between the presser plate 207 and the receiverplate 206 is first adjusted beforehand by the position of the upper nut212 a or the lower nut 212 b so as to be slightly smaller than thethickness of the sponge mop pad 214 and the metal plate 215. The spongemop pad 214 of the mop with sponge 213 is immersed into the wash waterin the water tank 201 and the sticking dust and dirt of the sponge moppad 214 are washed off. Then, as shown in FIG. 12, the sponge mop pad214 together with the metal plate 215 of the mop with sponge 213 isinserted into the gap between the presser plate 207 and the receiverplate 206 and subsequently the mop handle 216 is rotated in thedirection of arrow A in FIG. 12. Thus, the metal plate 215 is rotated inthe direction of arrow A around a fulcrum line P in FIG. 12. Thisfulcrum line P is generated in a contact face between a front endportion of the metal plate 215 and a rear end portion of the presserplate 207. Thereby, the sponge mop pad 214 is compressed between themetal plate 215 and the receiver plate 206 so that the water containedin the sponge mop pad 214 is squeezed off to be appropriately adjustedfor wiping the floor. The squeezed water falls down flowing through aplurality of drain holes (not shown) bored in the receiver plate 206 orflowing aside the receiver plate 206 to be stored in the water tank 201.

[0089] Then, the mop handle 216 is rotated in the direction of arrow Bin FIG. 12 and the sponge mop pad 214 together with the metal plate 215is pulled out of the gap between the presser plate 207 and the receiverplate 206, so that the mop with sponge is ready for the next wiping andcleaning.

[0090] FIGS. 13 to 16 show the fifth embodiment, wherein FIG. 13 is aperspective view, FIG. 14 is a front view, FIG. 15 is a cross sectionalside view taken on line XV-XV of FIG. 14 and seen in the direction ofarrows and FIG. 16 is a function explanatory view of the fifthembodiment. As the reference numerals 201 to 207, 209 and 211 to 215 inFIGS. 13 to 16 designate the same parts and components, respectively, asthose shown in FIGS. 7 to 12, repeated description thereon will beomitted.

[0091] In FIGS. 13 to 16, numeral 218 a designates an upper swell thatis provided at an upper end of the strut 211 passing through the presserplate 207 and numeral 218 b designates a lower swell that is provided ata lower end of the strut 211 passing through the receiver plate 206.Numeral 219 a designates an upper spring that is provided between theupper swell 218 a and an upper surface of the presser plate 207 andnumeral 219 b designates a lower spring that is provided between thelower swell 218 b and a lower surface of the receiver plate 206. If thestrut 211 is separated into two parts at a middle position thereof, thena single spring may be provided between these two parts.

[0092] In the fifth embodiment constructed as mentioned above, thesponge mop pad 214 of the mop with sponge 213 is immersed into washwater (not shown) in the water tank 201 and the sticking dust and dirtof the sponge mop pad 214 are washed off. Then, as shown in FIG. 16, thesponge mop pad 214 together with the metal plate 215 of the mop withsponge 213 is inserted into the gap between the presser plate 207 andthe receiver plate 206 and subsequently the mop handle 216 is rotated inthe direction of arrow A in FIG. 16 against the spring force of theupper springs 219 a, 219 a and the lower springs 219 b, 219 b. Thus, themetal plate 215 is rotated in the direction of arrow A around a fulcrumline P in FIG. 16. This fulcrum line P is generated in a contact facebetween a front end portion of the metal plate 215 and a rear endportion of the presser plate 207. Thereby, the sponge mop pad 214 iscompressed between the metal plate 215 and the receiver plate 206 sothat the water contained in the sponge mop pad 214 is squeezed off to beappropriately adjusted for wiping the floor. The squeezed water fallsdown flowing through a plurality of drain holes (not shown) bored in thereceiver plate 206 or flowing aside the receiver plate 206 to be storedin the water tank 201.

[0093] Then, the mop with sponge 202 is pulled out of the gap betweenthe presser plate 207 and the receiver plate 206 and the presser plate207 is rotated in the direction of arrow B in FIG. 15 by the springforce of the upper springs 219 a, 219 a and the lower springs 219 b, 219b.

[0094] Further, FIGS. 17 to 25 illustrate a seventh to an eleventhembodiments of the present invention.

[0095] FIGS. 17 to 25 illustrate a sixth embodiment, wherein FIG. 17 isa perspective view of a mop squeezer of the sixth embodiment, FIG. 18 isa front view of the mop squeezer, FIG. 19 is a function explanatory viewof the mop squeezer in which a mop with sponge is inserted into the mopsqueezer to thereby squeeze wash water or dirty water contained in asponge mop pad, FIG. 20 is a side view showing the state where the mopsqueezer is mounted on a strut, FIG. 21 is a front view of the mopsqueezer of FIG. 20 and FIG. 22 is a rear view of the mop squeezer ofFIG. 20.

[0096] In FIGS. 13 to 25, numeral 301 designates the mop squeezer,numeral 302 designates a frame of a cross sectional C-shape of the mopsqueezer that has its upper and lower surface portions opened andcomprises a rear plate 302 a and side plates 302 b, 302 b. Numeral 303designates a presser plate that is fixed between the side plates 302 b,302 b. It is to be noted that the presser plate 303 may have its bothside ends fixed to the side plates 302 b, 302 b or may have its bothside ends not fixed to the side plates 302 b, 302 b but fixed to therear plate 302 a of the frame 302, as shown in FIG. 18. Numeral 304designates a receiver plate that has its both side ends fitted withframe suspending plates 305, 305 of a substantially triangular shape soas to be rotatable around pins 306, 306. Numeral 307 designates aplurality of holes that are bored in the receiver plate 304. Numerals308 a, 308 a designate frame suspending formed members that extend fromthe side plates 302 b, 302 b of the frame 302 and form grooves 309, 309.Numeral 308 b designates a frame suspending formed member that extendsfrom the rear plate 302 a of the frame 302 and forms a groove (notshown). As for the frame suspending formed members 308 a, 308 a and that308 b, both of them may be provided or either of them may be provided. Amop with sponge 310 is such one as shown in FIG. 19, wherein numeral 310a designates a handle and numeral 310 b designates a fixing lever thatfixes a fixing plate 310 c to the handle 310 a. Numeral 310 d designatesa metal plate, to which a sponge mop pad 310 e is bonded via a doublecoated adhesive tape, etc.

[0097] A water tank 311 is placed on a bottom plate 312 a of a carriage312, as shown in FIGS. 20 to 22. The carriage 312 comprises fourcasters, that is, two 312 b, 312 b on the front side and two 312 c, 312c on the rear side. The carriage 312 is fixed with two upwardlyextending struts 312 d, 312 d that have their upper ends connected toeach other via an upper strut 312 e. The upper strut 312 e, at which theworkers push the carriage 312, is covered with a rubber tube 312 f, etc.so as to be friendly to the workers. Numeral 312 g designates a middlestrut that is fixed to a middle position of the struts 312 d, 312 d andhas its both ends extending downward to form vertical struts 312 h, 312h. The vertical struts 312 h, 312 h have their ends bent substantiallyorthogonally to further extend to form suspending struts 312 i, 312 i.Between the suspending struts 312 i, 312 i and the struts 312 d, 312 d,L-shaped reinforcing struts 312 j, 312 j are provided as reinforcingmembers. Also, between the reinforcing struts 312 j, 312 j, upper andlower horizontal reinforcing struts 312 k, 312 k are provided.

[0098] In the six the embodiment constructed as mentioned above, thesponge mop pad 310 e of the mop with sponge 310 is immersed into washwater (not shown) in the water tank 311, as shown in FIGS. 20 to 22, andthe sticking dust and dirt of the sponge mop pad 310 e are washed off.Then, as shown in FIG. 19, the sponge mop pad 310 e together with themetal plate 310 d of the mop with sponge 310 is inserted into the gapbetween the presser plate 303 and the receiver plate 304 andsubsequently the mop handle 310 a is rotated in the direction of arrow Cin FIG. 19. Thus, the receiver plate 304 is rotated in the direction ofarrow D around the pins 306, 306 via the frame suspending plates 305,305. Thereby, the gap between the presser plate 303 and the receiverplate 304 becomes narrower so that the sponge mop pad 310 e iscompressed and the water contained in the sponge mop pad 310 e issqueezed off to be appropriately adjusted for wiping the floor. Thesqueezed water falls down flowing through a plurality of holes 307 boredin the receiver plate 304 or flowing aside the receiver plate 304 to bestored in the water tank 311.

[0099] Then, the handle 310 a is rotated in the direction of arrow E inFIG. 19 to thereby rotate the receiver plate 304 in the direction ofarrow F around the pins 306, 306 via the frame suspending plates 305,305. Thereby, the gap between the presser plate 303 and the receiverplate 304 becomes larger so that the mop with sponge 310 can be easilypulled out. Thus, the mop with sponge 310 is removed out of the mopsqueezer 301 to be ready for the next wiping.

[0100] In this case, a considerable force is required to move the handle310 a in the direction of arrow C in FIG. 19 for squeezing the washwater contained in the sponge mop pad 310 e.

[0101] In the conventional case, it has been necessary to design thewater tank so that it has an enough strength for standing a strong forceadded to the handle 310 a. In the present embodiment, however, thestrong force added to the handle 310 a is conveyed to the entirecarriage 312 via the suspending struts 312 i, 312 i. Thus, it is notnecessary to make the water tank 311 strengthened so as to stand thestrong force added to the handle 310 a.

[0102] The present embodiment is not limited to the examples illustratedin FIGS. 17 to 22 but can be applied to general mop squeezers havingsuch mops as made by cloths or cloth fibers, as exemplified next.

[0103] A seventh embodiment according to the present invention, that issimilar to the sixth embodiment, will be described with reference toFIGS. 23 to 25.

[0104]FIG. 23 is a side view, FIG. 24 is a front view and FIG. 25 is arear view, all of the seventh embodiment. As the reference numerals 311,312, 312 a, 312 b, 312 c, 312 d, 312 e, 312 f, 312 g, 312 h, 312 i, 312j and 312 k in FIGS. 23 to 25 designate the same parts and components,respectively, as those shown in FIGS. 20 to 22, repeated descriptionthereon will be omitted.

[0105] In FIGS. 23 to 25, numeral 313 designates a cloths or cloth fibertype mop squeezer, wherein numeral 313 a designates a handle, numeral313 b designates a squeezing shaft of a mop made by cloths or clothfibers (not shown). The squeezing shaft 313 b is rotated by the rotationof the handle 313 a to thereby squeeze off wash water contained in thecloths or cloth fibers. Numeral 313 c designates a suspending formedmember that is fixed to the squeezer 313.

[0106] In the seventh embodiment constructed as mentioned above, astrong force added to the handle 313 a for squeezing off the watercontained in the cloths or cloth fiber type mop is conveyed to theentire carriage 312 via the suspending formed member 313 c and thesuspending struts 312 i, 312 i. Hence, it is not necessary to make thewater tank 311 strengthened so as to stand the strong force added to thehandle 313 a.

[0107] And further, FIGS. 26 to 34 illustrate an eighth to an eleventhembodiments of the present invention.

[0108] A mop squeezer of an eighth embodiment according to the presentinvention will be described with reference to FIGS. 26 to 28.

[0109]FIG. 26 is a perspective view, FIG. 27 is a side view and FIG. 28is a function explanatory view, all of the eighth embodiment.

[0110] In FIGS. 26 to 28, numeral 401 designates the mop squeezer,numerals 402, 402 designate frame members that are providedsubstantially in parallel to each other and inclinedly relative to afloor 403, numeral 404 designates an upper frame pipe that connectsupper ends of the frame members 402, 402 to each other and numeral 405designates a lower frame pipe that connects lower ends of the framemembers 402, 402 to each other. Numerals 406, 406 designate struts thatare fixedly provided at a middle position of the frame members 402, 402so as to make an acute angle between themselves and the frame members402, 402 and numeral 407 designates a lower frame pipe that connectslower ends of the struts 406, 406 to each other. Numeral 408 designatesa presser plate that is fixed to the struts 406,406 and numeral 409designates a receiver plate that is fitted to the frame members 402, 402rotatably around pins 410, 410. The gap between the presser plate 408and the receiver plate 409 is set to such a size as is slightly smallerthan a thickness of the mop with sponge in the prior art shown in FIGS.35 and 36. In FIG. 28, numeral 411 designates a mop with sponge thatcomprises a metal plate 412, a sponge mop pad 413 and a handle 414.Numeral 415 designates a water tank.

[0111] In the eighth embodiment constructed as mentioned above, spongemop pad 413 together with the metal plate 412 of the mop with sponge 411is placed on the receiver plate 409 so as to be inserted into the gapbetween the presser plate 408 and the receiver plate 409. When thehandle 414 is rotated in the direction of arrow A in FIG. 28, thereceiver plate 409 is also rotated so that the sponge mop pad 413 iscompressed between the presser plate 408 and the receiver plate 409.Thus, the water contained in the sponge mop pad 413 is squeezed off tobe appropriately adjusted. Then, the handle 414 is rotated in thedirection of arrow B and the sponge mop pad 413 together with the metalplate 412 is taken out from between the presser plate 408 and thereceiver plate 409 to be ready for the next wiping.

[0112] In this case, a considerable force is required to move the handle414 in the direction of arrow C in FIG. 28 for squeezing the wash watercontained in the sponge mop pad 413.

[0113] In the conventional case, it has been necessary to design thewater tank so that it has an enough strength for standing a strong forceadded to the handle 414. In the present embodiment, however, the strongforce added to the handle 414 is conveyed to the strut 406 via thepresser plate 408 and to the frame member 402 via the receiver plate409, and thus to the entire mop squeezer 401. Hence, it is not necessaryto make the water tank 415 strengthened so as to stand the strong forceadded to the handle 414.

[0114] Next, a mop squeezer of a ninth embodiment according to thepresent invention will be described with reference to FIGS. 29 and 30.Both of FIGS. 29 and 30 are side views of the ninth embodiment, whereinFIG. 30 shows the state where the mop squeezer is folded.

[0115] In FIGS. 29 and 30, reference numerals 401 a to 403 a, 406 a and408 a to 410 a designate the same parts and components, respectively, asthose shown by reference numerals 401 to 403, 406 and 408 to 410 inFIGS. 26 to 28 and repeated description thereon will be omitted.

[0116] In FIGS. 29 and 30, numeral 416 a designates a pin, around whichthe frame member 402 a and the strut 406 a are rotatably supported andnumeral 417 a designates a stopper that stops the strut 406 a againstthe frame member 402 a so that an acute angle is formed between theframe member 402 a and the strut 406 a.

[0117] In the ninth embodiment constructed as mentioned above, duringthe work, the mop squeezer is used while the frame member 402 a and thestrut 406 a keep the acute angle, as shown in FIG. 29. When the work isfinished or otherwise during the time out of work, the strut 406 a isfolded to the frame member 402 a, as shown in FIG. 30, so that the mopsqueezer is easily transported or is kept aside.

[0118] Further, a mop squeezer of a tenth embodiment according to thepresent invention will be described with reference to FIGS. 31 to 33.FIG. 31 is a side view thereof, FIG. 32 is a front view thereof and FIG.33 is a side view showing the state where the mop squeezer is folded.

[0119] In FIGS. 31 to 33, reference numerals 401 b to 403 b, 406 b, 409b, 410 b and 415 b designate the same parts and components,respectively, as those shown by reference numerals 401 to 403, 406, 409,410 and 415 in FIGS. 26 to 28 and repeated description thereon will beomitted.

[0120] In FIGS. 31 to 33, numeral 418 b designates a rotation jig, bywhich the frame member 402 b and the strut 406 b are rotatablysupported, numeral 419 b designates a pin and numeral 420 b designates abottom portion of the mop squeezer 401 b that exists between a lower endportion of the frame member 402 b and a lower end portion of the strut406 b. This bottom portion 420 b is surrounded by a hinge mechanism thatcomprises a frame member side bottom plate 421 b, a strut side bottomplate 422 b, a pin 423 b rotatably connecting the frame member 402 b tothe frame member side bottom plate 421 b, a pin 424 b rotatablyconnecting the strut 406 b to the strut side bottom plate 422 b and apin 425 b rotatably connecting the frame member side bottom plate 421 band the strut side bottom plate 422 b to each other. Numerals 426 b, 427b designate casters fitted to the lower ends of the frame member 402 band the strut 406 b.

[0121] In the tenth embodiment constructed as mentioned above, duringthe work, the mop squeezer is used while the frame member 402 b and thestrut 406 b keep the acute angle, as shown in FIG. 31.

[0122] When the work is finished at a predetermined place, the mopsqueezer is moved to a next place to be wiped using the casters 426 b,427 b. When the work is finished or otherwise during the time out ofwork, the strut 406 b is folded to the frame member 402 b, as shown inFIG. 33, so that the mop squeezer is easily transported or is keptaside.

[0123] Finally, a mop squeezer of an eleventh embodiment according tothe present invention will be described with reference to FIG. 34. FIG.34 is a front view of the eleventh embodiment.

[0124] In FIG. 34, reference numerals 401 c to 403 c, 406 c, 409 c, 410c, 415 c, 419 c and 426 c designate the same parts and components,respectively, as those shown by reference numerals 401 b to 403 b, 406b, 409 b, 410 b, 415 b, 419 b and 426 b in FIG. 33 and repeateddescription thereon will be omitted.

[0125] In FIG. 34, numerals 428 c, 428 c designate presser plate piecesthat are fitted to the struts 406 c, 406 c.

[0126] In the eleventh embodiment constructed as mentioned above, if asponge mop pad having an extended width is used, a metal plate of theextended width holding the sponge mop pad is engaged at both endportions of the metal plate with the presser plate pieces 428 c, 428 c.Thus, the sponge mop pad is compressed between the metal plate and thereceiver plate 409 c and water contained in the sponge mop pad issqueezed off so that a predetermined water content is realized.

[0127] Industrial Applicability

[0128] As mentioned above, the mop and the mop squeezer of the presentinvention has the applicability as follows:

[0129] 1. As the water contained in the sponge mop pad after washed bythe wash water can be easily squeezed off by application of the leverusing the handle of the mop, the cleaning work can be done comfortablyeven by women workers having less physical power.

[0130] 2. As the sponge mop pad is not of the type that is folded at themiddle position so as to squeeze off the water contained therein,deterioration of the sponge mop pad can be avoided.

[0131] 3. As the water contained in the sponge mop pad is squeezed offby the homogenous force added to the entire surface of the sponge moppad, the water content in the sponge mop pad after squeezed becomeshomogenous over the entire sponge mop pad and no irregularity in thewiping is caused.

[0132] 4. As the structure of the mop and/or the mop squeezer is simple,it can be easily changed to a larger size or to a smaller size so as tobe widely applied not only to the industrial field but also to the homeuse.

[0133] 5. While the conventional cleaning in a hospital etc. has beendone in three steps, that is, sweeping by a bloom, wiping by a dust mopand wiping by water, the mop and/or the mop squeezer of the presentinvention enable the cleaning by one step, thereby remarkably reducingthe cost of man power required for the cleaning.

[0134] 6. As the cleaning, especially in a hospital, can be done by thesponge mop pad having the homogenous water content, the water on thefloor after the cleaning is dried in a short time, which is effectivefor avoidance of internal infection in the hospital.

[0135] 7. As the sponge mop pad is squeezed directly above the watertank, there is caused no scattering of the water that is squeezed off,which is preferable for the sanitary purpose.

[0136] 8. As the squeezing mechanism is made very simple such that thesponge mop pad is compressed by the metal plate of the mop that isrotated around the fulcrum defined as the contact line of the metalplate and the presser plate of the water tank, the squeezing work of themop is very simple.

[0137] 9. While the conventional water tank has been designed to have ahigh strength so as to stand the large force required for squeezing offthe wash water contained in the mop, this is not necessary in thepresent invention.

[0138] 10. For the same reason as in Item 9 above, the water tank can bemade having a light weight.

[0139] 11. As the squeezing mechanism of the sponge mop pad is verysimple, manufacture of the mop squeezer is very easy.

[0140] 12. As the structure of the unit is simple as compared with theconventional unit, the mop squeezer of the sponge mop pad can be madeless costly.

[0141] 13. As the hinge mechanism enables a compact size of the mopsqueezer, when folded, transportation and maintenance thereof can bedone easily.

What is claimed is:
 1. A mop and mop squeezer unit, said mop beingfitted with a sponge mop pad, said mop squeezer squeezing wash watercontained in said sponge mop pad, wherein said mop and mop squeezer unitcomprises an insert body provided in one of said mop and said mopsqueezer, a fit member, to which said insert body is fitted, provided inthe other of said mop and said mop squeezer, a receiver plate arrangedbelow said insert body or said fit member in said mop squeezer and amovable mechanism that is rotatable so as to change a gap between saidinsert body or said fit member and said receiver plate.
 2. A mop and mopsqueezer unit as claimed in claim 1, wherein a spring is providedbetween said insert body or said fit member and said receiver plate. 3.A mop squeezer squeezing wash water contained in a sponge mop pad thatis attached to a rigid body of a mop, wherein said mop squeezercomprises a receiver plate arranged in said mop squeezer, there isformed a fulcrum that makes contact with at least one point of saidrigid body to which said sponge mop pad is attached and a gap betweensaid fulcrum and said receiver plate is changeable.
 4. A mop squeezer asclaimed in claim 3, wherein the lower end of said fulcrum is formed on apresser plate, a strut to form a gap between said receiver plate and/orsaid presser plate is provided passing through said receiver plate andsaid presser plate and an elastic member is provided at portions of saidstrut that pass through said receiver plate and said presser plate.
 5. Amop squeezer as claimed in claim 3 or 4, wherein said mop squeezercomprises a cylindrical member on which said receiver plate is placed.6. A mop squeezer as claimed in claims 3 to 5, wherein said cylindricalmember is rotatable.
 7. A mop squeezer squeezing wash water contained ina mop, wherein said mop squeezer is provided above a water tankreceiving said wash water that is squeezed off by said mop squeezer. 8.A mop squeezer squeezing wash water contained in a mop, wherein said mopsqueezer has a function to be detachably mounted on a strut providedabove a water tank receiving said wash water that is squeezed off bysaid mop squeezer.
 9. A mop squeezer squeezing wash water contained in amop, wherein said mop squeezer has a function to be detachably mountedon a strut, said strut at one portion being fixed to a carriage, onwhich a water tank receiving said wash water that is squeezed off bysaid mop squeezer is placed, and at another portion being provided abovesaid water tank.
 10. A mop squeezer, comprising a presser memberprovided in a framework of said mop squeezer and a receiver platerotatably arranged below said presser member in said framework so that agap between said presser member and said receiver plate is smaller thana thickness of a mop that is applied to said mop squeezer.
 11. A mopsqueezer as claimed in any one of claims 7 to 9, comprising a pressermember provided in a framework of said mop squeezer and a receiver platerotatably arranged below said presser member in said framework so that agap between said presser member and said receiver plate is smaller thana thickness of a mop that is applied to said mop squeezer.
 12. A mopsqueezer, comprising a strut fitted to each of two frame members of saidmop squeezer so that an acute angle is formed between said strut andsaid frame member, a presser member fixed between said struts and areceiver plate rotatably arranged between said frame members below saidpresser member so that a gap between said presser member and saidreceiver plate is smaller than a thickness of a mop that is applied tosaid mop squeezer.
 13. A mop squeezer, comprising a strut rotatablyfitted to each of two frame members of said mop squeezer so that, in astationary position of said mop squeezer, substantially zero angle andan acute angle are formed between said strut and said frame member, apresser member fixed between said struts and a receiver plate rotatablyarranged between said frame members below said presser member so that agap between said presser member and said receiver plate is smaller thana thickness of a mop that is applied to said mop squeezer.
 14. A mopsqueezer as claimed in claim 13, wherein said struts have their lowerend portions connected to each other via a lower frame fixing member,said struts have their lower end portions connected to each other via alower strut fixing member and said frame members and said struts areconnected to each other via a hinge mechanism.
 15. A mop squeezer,comprising a strut fitted to each of two frame members of said mopsqueezer so that an acute angle is formed between said strut and saidframe member, a presser piece fixed to each of said struts and areceiver plate rotatably arranged between said frame members below saidpresser pieces so that a gap between said presser pieces and saidreceiver plate is smaller than a thickness of a mop that is applied tosaid mop squeezer.
 16. A mop squeezer, comprising a strut rotatablyfitted to each of two frame members of said mop squeezer so that, in astationary position of said mop squeezer, substantially zero angle andan acute angle are formed between said strut and said frame member, apresser piece fixed to each of said struts and a receiver platerotatably arranged between said frame members below said presser piecesso that a gap between said presser pieces and said receiver plate issmaller than a thickness of a mop that is applied to said mop squeezer.17. A mop squeezer as claimed in claim 16, wherein said frame membershave their lower end portions connected to each other via a lower framefixing member, said struts have their lower end portions connected toeach other via a lower strut fixing member and said frame members andsaid struts are connected to each other via a hinge mechanism.